28040480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:119

約数の個数: 144

約数和(自身を含む): 77198184

約数和(自身を除く): 49157704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 61, 65, 68, 80, 85, 104, 122, 130, 136, 160, 169, 170, 208, 221, 244, 260, 272, 305, 338, 340, 416, 442, 488, 520, 544, 610, 676, 680, 793, 845, 884, 976, 1037, 1040, 1105, 1220, 1352, 1360, 1586, 1690, 1768, 1952, 2074, 2080, 2210, 2440, 2704, 2720, 2873, 3172, 3380, 3536, 3965, 4148, 4420, 4880, 5185, 5408, 5746, 6344, 6760, 7072, 7930, 8296, 8840, 9760, 10309, 10370, 11492, 12688, 13481, 13520, 14365, 15860, 16592, 17680, 20618, 20740, 22984, 25376, 26962, 27040, 28730, 31720, 33184, 35360, 41236, 41480, 45968, 51545, 53924, 57460, 63440, 67405, 82472, 82960, 91936, 103090, 107848, 114920, 126880, 134810, 164944, 165920, 175253, 206180, 215696, 229840, 269620, 329888, 350506, 412360, 431392, 459680, 539240, 701012, 824720, 876265, 1078480, 1402024, 1649440, 1752530, 2156960, 2804048, 3505060, 5608096, 7010120, 14020240, 28040480]

約数ペア:

[(1, 28040480), (2, 14020240), (4, 7010120), (5, 5608096), (8, 3505060), (10, 2804048), (13, 2156960), (16, 1752530), (17, 1649440), (20, 1402024), (26, 1078480), (32, 876265), (34, 824720), (40, 701012), (52, 539240), (61, 459680), (65, 431392), (68, 412360), (80, 350506), (85, 329888), (104, 269620), (122, 229840), (130, 215696), (136, 206180), (160, 175253), (169, 165920), (170, 164944), (208, 134810), (221, 126880), (244, 114920), (260, 107848), (272, 103090), (305, 91936), (338, 82960), (340, 82472), (416, 67405), (442, 63440), (488, 57460), (520, 53924), (544, 51545), (610, 45968), (676, 41480), (680, 41236), (793, 35360), (845, 33184), (884, 31720), (976, 28730), (1037, 27040), (1040, 26962), (1105, 25376), (1220, 22984), (1352, 20740), (1360, 20618), (1586, 17680), (1690, 16592), (1768, 15860), (1952, 14365), (2074, 13520), (2080, 13481), (2210, 12688), (2440, 11492), (2704, 10370), (2720, 10309), (2873, 9760), (3172, 8840), (3380, 8296), (3536, 7930), (3965, 7072), (4148, 6760), (4420, 6344), (4880, 5746), (5185, 5408)]